org.apache.kafka.streams.state.internals.RocksDbSessionBytesStoreSupplier Maven / Gradle / Ivy
/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You under the Apache License, Version 2.0
* (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.apache.kafka.streams.state.internals;
import org.apache.kafka.common.utils.Bytes;
import org.apache.kafka.streams.state.SessionBytesStoreSupplier;
import org.apache.kafka.streams.state.SessionStore;
public class RocksDbSessionBytesStoreSupplier implements SessionBytesStoreSupplier {
private final String name;
private final long retentionPeriod;
public RocksDbSessionBytesStoreSupplier(final String name,
final long retentionPeriod) {
this.name = name;
this.retentionPeriod = retentionPeriod;
}
@Override
public String name() {
return name;
}
@Override
public SessionStore get() {
final RocksDBSegmentedBytesStore segmented = new RocksDBSegmentedBytesStore(
name,
metricsScope(),
retentionPeriod,
segmentIntervalMs(),
new SessionKeySchema());
return new RocksDBSessionStore(segmented);
}
@Override
public String metricsScope() {
return "rocksdb-session";
}
@Override
public long segmentIntervalMs() {
// Selected somewhat arbitrarily. Profiling may reveal a different value is preferable.
return Math.max(retentionPeriod / 2, 60_000L);
}
@Override
public long retentionPeriod() {
return retentionPeriod;
}
}